"Worried about whether they'll be able to perform sexually or not, men can get caught up in the observer perspective, distractedly watching themselves anxiously to see whether their worst fears will be realized. Masters and Johnson called this kind of behavior 'spectatoring.'"

To be symmetrical in (Brian) Greene's world, a theory that mathematically defines some universal physical law can't break down when the surrounding circumstances of time or place change. It must work everywhere, without exception, and, as Greene states, everywhen.

From My Friend the Fanatic, by Sadanand Dhume, p. 149: "In the nineteenth century, Makassar (in Indonesia) gave the world the hair oil whose popularity led to the invention of the antimacassar, a cover to protect furniture in Victorian drawing rooms."

From Miracle on the Hudson: The Survivors of Flight 1549, by W. Prochnau and L. Parker, p. 34: "On Flight 1549, Smithsonian scientists concluded that the bird parts, known as snarge, removed from the engines, wings, and fuselage came overwhelmingly from Canada geese but also from ducks, doves, and various songbirds."

"The smallest chunk of the brain that can be reliably analyzed by an fMRI machine is called a 'voxel.' But each voxel corresponds to several million neurons, so the sensitivity of an fMRI machine is not good enough to isolate individual thoughts."